/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package GUI;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Developed for NTT - All is an Entity
 * Questa Servlet serve per controllare se un attributo di un'entity  inserito dall'utente è corretto
 * @author Alessandro Pollace
 * @version 0.1
 */
@WebServlet(name = "validateInput", urlPatterns = {"/validateInput"})
public class validateInput extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            LanguageLoader language = new LanguageLoader();
            String typeOfEntity;
            String nome;

            typeOfEntity = request.getParameter("entity");
            EntityGUI entity = new EntityGUI(typeOfEntity);
            nome = entity.getNome();
            String res = entity.checkAttribute(request.getParameter("attribute"), request.getParameter("value"));

            if (!res.equals("allOk")) {
                out.print(language.getSysCaption(res));
            } else {
                out.print("");
            }

        } catch (Exception e) {
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
